Question

69) What should be added to 3x* - 4y2 + xy to get 4x2 - y2 + Oxy.​

Answer 1

Step-by-step explanation:

let the number be z

and solve

Answer 2

Step-by-step explanation:

We should add x*+3y* to get 4x*-y*+0xy

Hope it helps you to work...